Finding the Fourth Proportional to 21,823.41, 30,108.87 and 13,323.27

Step by Step Solution

1. Step 1: Write the proportion equation
   21,823.41 : 30,108.87 = 13,323.27 : x
2. Step 2: Convert to fraction form
   21,823.41/30,108.87 = 13,323.27/x
3. Step 3: Cross multiply
   21,823.41x = 30,108.87 × 13,323.27
4. Step 4: Simplify right side
   21,823.41x = 401,148,604.40
5. Step 5: Solve for x
   x = 401,148,604.40/21,823.41
6. Step 6: Final answer
   x = 18,381.57